Patents by Inventor Nathan Henri LEVY

Nathan Henri LEVY has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10319083
    Abstract: The disclosure provides for globally detecting and correcting unwanted sensor artifacts arising from processing techniques combining multiple visual images into an output image while possessing information relating to a localized area of the image that can be accomplished during scanning of the image and independent of the number of images or the computer processing method used to acquire them.
    Type: Grant
    Filed: July 7, 2017
    Date of Patent: June 11, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Elad Granot, Nathan Henri Levy
  • Patent number: 10321112
    Abstract: A first image and a second image of an object taken with different viewing directions are received. The first image and the second image are downscaled in a ratio of a downscale factor DF to generate a first downscaled image and a second downscaled image, respectively. An edge map is generated by detecting an edge pixel from the first downscaled image. An initial cost volume matrix is generated from the first downscaled image and the second downscaled image according to the edge map. An initial disparity estimate is generated from the initial cost volume matrix. The initial disparity estimate is refined using the initial disparity estimate to generate a final disparity set. A depth map is generated from the first image and the second image using the final disparity set.
    Type: Grant
    Filed: April 12, 2017
    Date of Patent: June 11, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Yonathan Aflalo, Ariel Orfaig, Sagi Tzur, Ayal Keisar, Nathan Henri Levy
  • Patent number: 10257456
    Abstract: Embodiments of a virtual frame buffer (VFB) for buffering asynchronous data originating from an imaging source such as a dynamic vision sensor. The VFB may include a hash table memory, a data memory, and a control unit. The control unit receives an input address of an asynchronous data event and determines a pseudo-randomly computed hash of the hash table memory at which to store the input address. The control unit links the hash to a handle corresponding to a data memory cell that stores pixel data of the event. The VFB may interface like a full frame buffer, but use significantly less memory. The VFB may be used with a pixel processing algorithm to search for recent events in a localized environment of a pixel.
    Type: Grant
    Filed: September 7, 2017
    Date of Patent: April 9, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ariel Orfaig, Nathan Henri Levy
  • Publication number: 20190075271
    Abstract: Embodiments of a virtual frame buffer (VFB) for buffering asynchronous data originating from an imaging source such as a dynamic vision sensor. The VFB may include a hash table memory, a data memory, and a control unit. The control unit receives an input address of an asynchronous data event and determines a pseudo-randomly computed hash of the hash table memory at which to store the input address. The control unit links the hash to a handle corresponding to a data memory cell that stores pixel data of the event. The VFB may interface like a full frame buffer, but use significantly less memory. The VFB may be used with a pixel processing algorithm to search for recent events in a localized environment of a pixel.
    Type: Application
    Filed: September 7, 2017
    Publication date: March 7, 2019
    Inventors: ARIEL ORFAIG, Nathan Henri Levy
  • Patent number: 10158815
    Abstract: A method of detecting a bad pixel in an image sensor includes: determining, a first color of a center pixel of a Bayer patch output by the image sensor; extracting, a main patch, a first auxiliary patch, and a second auxiliary patch from the Bayer patch, having the first color, a second other color, and a third other color, respectively; generating a normalized patch of the first color from the main patch and the auxiliary patches that brings a level of the auxiliary patches to a level of the main patch; and detecting whether the center pixel of the Bayer patch is a bad pixel using the normalized patch.
    Type: Grant
    Filed: February 1, 2017
    Date of Patent: December 18, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Yonathan Aflalo, Nathan Henri Levy
  • Publication number: 20180357504
    Abstract: Event-based image feature extraction includes reducing an accumulated magnitude of a leaky integrate and fire (LIF) neuron based on a difference between a current time and a previous time; receiving an event input from a dynamic vision sensor (DVS) pixel at the current time; weighting the received input; adding the weighted input to the reduced magnitude to form an accumulated magnitude of the LIF neuron at the current time; and, if the accumulated magnitude reaches a threshold, firing the neuron and decreasing the accumulated magnitude.
    Type: Application
    Filed: June 13, 2017
    Publication date: December 13, 2018
    Inventors: Lior Zamir, Nathan Henri Levy
  • Publication number: 20180295298
    Abstract: A method for acquiring intensity images through a dynamic vision sensor is provided, the method including resetting an inner state of each of a plurality of pixels in the dynamic vision sensor to a predetermined value; receiving from at least one of the plurality of pixels an event signal based on a change in its inner state indicative of a difference in amount of light incident upon the at least one of the plurality of pixels versus that corresponding to the predetermined value; and integrating over a time period the received event signal for the at least one of the plurality of pixels to determine the intensity of light incident upon the at least one of the plurality of pixels.
    Type: Application
    Filed: April 6, 2017
    Publication date: October 11, 2018
    Inventors: Lior Zamir, Nathan Henri Levy
  • Publication number: 20180189931
    Abstract: A method includes determining blocks of speckle-free regions in a first image; storing information about the blocks in a memory; and processing at least one second image based on the stored information.
    Type: Application
    Filed: January 4, 2017
    Publication date: July 5, 2018
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Nir DAGANI, Nathan Henri LEVY, Yuri FRIEDMAN, Dor BARBER
  • Publication number: 20180020173
    Abstract: A method of detecting a bad pixel in an image sensor includes: determining, a first color of a center pixel of a Bayer patch output by the image sensor; extracting, a main patch, a first auxiliary patch, and a second auxiliary patch from the Bayer patch, having the first color, a second other color, and a third other color, respectively; generating a normalized patch of the first color from the main patch and the auxiliary patches that brings a level of the auxiliary patches to a level of the main patch; and detecting whether the center pixel of the Bayer patch is a bad pixel using the normalized patch.
    Type: Application
    Filed: February 1, 2017
    Publication date: January 18, 2018
    Inventors: YONATHAN AFLALO, NATHAN HENRI LEVY
  • Publication number: 20180018759
    Abstract: The disclosure provides for globally detecting and correcting unwanted sensor artifacts arising from processing techniques combining multiple visual images into an output image while possessing information relating to a localized area of the image that can be accomplished during scanning of the image and independent of the number of images or the computer processing method used to acquire them.
    Type: Application
    Filed: July 7, 2017
    Publication date: January 18, 2018
    Inventors: Elad GRANOT, Nathan Henri LEVY
  • Publication number: 20180020205
    Abstract: A first image and a second image of an object taken with different viewing directions are received. The first image and the second image are downscaled in a ratio of a downscale factor DF to generate a first downscaled image and a second downscaled image, respectively. An edge map is generated by detecting an edge pixel from the first downscaled image. An initial cost volume matrix is generated from the first downscaled image and the second downscaled image according to the edge map. An initial disparity estimate is generated from the initial cost volume matrix. The initial disparity estimate is refined using the initial disparity estimate to generate a final disparity set. A depth map is generated from the first image and the second image using the final disparity set.
    Type: Application
    Filed: April 12, 2017
    Publication date: January 18, 2018
    Inventors: YONATHAN AFLALO, ARIEL ORFAIG, SAGI TZUR, AYAL KEISAR, NATHAN HENRI LEVY
  • Patent number: 9848137
    Abstract: An image sensor includes a pixel array and a plurality of control circuits. The pixel array includes a plurality of sub-arrays arranged in a plurality of rows and columns, each of the plurality of sub-arrays including a plurality of pixels. The plurality of control circuits are coupled to the pixel array, and configured to control exposure of the plurality of sub-arrays. At least a first of the plurality of control circuits is configured to control exposure of a first of the plurality of sub-arrays according to a first set of exposure times. At least a second of the plurality of control circuits is configured to control exposure of a second of the plurality of sub-arrays according to a second set of exposure times. The first set of exposure times is different from the second set of exposure times.
    Type: Grant
    Filed: November 24, 2015
    Date of Patent: December 19, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Uzi Hizi, Nathan Henri Levy, Mickey Bahar
  • Publication number: 20170150076
    Abstract: An image sensor includes a pixel array and a plurality of control circuits. The pixel array includes a plurality of sub-arrays arranged in a plurality of rows and columns, each of the plurality of sub-arrays including a plurality of pixels. The plurality of control circuits are coupled to the pixel array, and configured to control exposure of the plurality of sub-arrays. At least a first of the plurality of control circuits is configured to control exposure of a first of the plurality of sub-arrays according to a first set of exposure times. At least a second of the plurality of control circuits is configured to control exposure of a second of the plurality of sub-arrays according to a second set of exposure times. The first set of exposure times is different from the second set of exposure times.
    Type: Application
    Filed: November 24, 2015
    Publication date: May 25, 2017
    Inventors: Uzi HIZI, Nathan Henri Levy, Mickey Bahar
  • Patent number: 9280811
    Abstract: A method of large-radius edge-preserving low-pass filtering a digital signal having data points, including computing weighted averages of a signal layer at vertices in at least two grids, the vertices in each grid being a different subset of the data points such that in each grid an amount of the vertices is less than an amount of the data points; and producing, for each of the data points, a large-radius edge-preserving low-pass filtered signal based on the weighted averages of the signal layer at vertices in the at least two grids neighboring the data point.
    Type: Grant
    Filed: March 6, 2014
    Date of Patent: March 8, 2016
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Nathan Henri Levy
  • Patent number: 9275446
    Abstract: A method of large-radius edge-preserving low-pass filtering is performed on a digital signal having data points. The method includes computing a weighted average of a signal layer at vertices spaced a distance apart such that an amount of the vertices is less than an amount of the data points and producing, for each of the data points, a large-radius edge-preserving low-pass filtered signal based on the weighted average of the signal layer at vertices neighboring the data point.
    Type: Grant
    Filed: October 15, 2013
    Date of Patent: March 1, 2016
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Nathan Henri Levy
  • Publication number: 20150254822
    Abstract: A method of large-radius edge-preserving low-pass filtering a digital signal having data points, including computing weighted averages of a signal layer at vertices in at least two grids, the vertices in each grid being a different subset of the data points such that in each grid an amount of the vertices is less than an amount of the data points; and producing, for each of the data points, a large-radius edge-preserving low-pass filtered signal based on the weighted averages of the signal layer at vertices in the at least two grids neighboring the data point.
    Type: Application
    Filed: March 6, 2014
    Publication date: September 10, 2015
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Nathan Henri LEVY
  • Publication number: 20150104112
    Abstract: A method of large-radius edge-preserving low-pass filtering a digital signal having data points, including computing a weighted average of a signal layer at vertices spaced a distance apart such that an amount of the vertices is less than an amount of the data points; and producing, for each of the data points, a large-radius edge-preserving low-pass filtered signal based on the weighted average of the signal layer at vertices neighboring the data point.
    Type: Application
    Filed: October 15, 2013
    Publication date: April 16, 2015
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Nathan Henri LEVY